William "Bill" Redington Hewlettwas an American engineer and the co-founder, with David Packard, of the Hewlett-Packard Company... (wikipedia)
All business proceeds on beliefs, or judgments of probabilities, and not on certainties.
Men and women want to do a good job, and if they are provided the proper environment, they will do so.
Never try to take a fortified hill, especially if the Army on top is bigger than you are.